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Chronic smokers often have difficulty breathing because they develop Chronic Obstructive Pulmonary Disorder, or COPD. The two diseases that fall under that category are emphys â¦ ema and chronic bronchitis.
Persistent smokerâs cough is a wet cough, it often produces mucus. The mucus may be clear, yellow, white or greenish in color. The cough may also be a sign of chronic bronchitis. Smokers are at far greater risk of respiratory illness than non-smokers.